Document
TC74HCT574AP/AF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74HCT574AP, TC74HCT574AF
Octal D-Type Flip-Flop with 3-State Output
The TC74HCT574A is a high speed CMOS OCTAL FLIP-FLOP with 3-STATE OUTPUT fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation.
Its inputs are compatible with TTL, NMOS, and CMOS output voltage levels.
Its 8-bit D-type flip-flops is controlled by a clock input (CK) and an output enable input ( OE ).
All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Features
• High speed: fmax = 62 MHz (typ.) at VCC = 5 V • Low power dissipation: ICC = 4 μA (max) at Ta = 25°C • Compatible with TTL outputs: VIL = 0.8 V (min)
VIH = 2.0 V (max) • Output drive capability: 15 LSTTL loads • Symmetrical output impedance: |IOH| = IOL = 6 mA (min) • Balanced propagation delays: tpLH ∼− tpHL • Pin and function compatible with 74LS574
Pin Assignment
TC74HCT574AP
TC74HCT574AF
Weight DIP20-P-300-2.54A SOP20-P-300-1.27A
: 1.30 g (typ.) : 0.22 g (typ.)
Start of commercial production
1988-11
1
2014-03-01
IEC Logic Symbol
Truth Table
Inputs
OE CK D
H
X
X
L
X
L
L
L
H
Output Q Z Qn L H
X: Don’t care Z: High impedance Qn: No change
System Diagram
TC74HCT574AP/AF
2
2014-03-01
TC74HCT574AP/AF
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature
VCC VIN VOUT IIK IOK IOUT ICC PD Tstg
−0.5 to 7
V
−0.5 to VCC + 0.5
V
−0.5 to VCC + 0.5
V
±20
mA
±20
mA
±35
mA
±75
mA
500 (DIP) (Note 2)/180 (SOP)
mW
−65 to 150
°C
Note 1:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).
Note 2: 500 mW in the range of Ta = −40 to 65°C. From Ta = 65 to 85°C a derating factor of −10 mW/°C shall be applied until 300 mW.
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time
VCC VIN VOUT Topr tr, tf
4.5 to 5.5
V
0 to VCC
V
0 to VCC
V
−40 to 85
°C
0 to 500
ns
Note: The operating ranges mus.